Surface Flow Visualization of a Side-Mounted NACA 0012 Airfoil in a Transonic Ludwieg Tube
Transonic testing is confronted with numerous challenges such as the need to match fullscale Mach and Reynolds numbers, as well as to ensure interference-free flow. Various methods such as porous  or adaptive walls [2, 3] are used for the latter. More modern methods involve a combination of “corrections” using numerical simulations . While cryogenic tunnels are used for industrial purposes [5, 6], small Ludwieg tube tunnels have an important role in wind tunnel testing .
KeywordsWind Tunnel Test Section Plenum Chamber Charge Tube Ludwieg Tube
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